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/*
** ClanLib SDK
** Copyright (c) 1997-2008 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** Hans de Goede
** (if your name is missing here, please add it)
*/
#ifndef header_soundoutput_alsa
#define header_soundoutput_alsa
#ifdef __linux__
#include "../soundoutput_generic.h"
#ifdef HAVE_ALSA_ASOUNDLIB_H
#include <alsa/asoundlib.h>
#endif
#ifdef HAVE_ASOUNDLIB_H
#include <asoundlib.h>
#endif
class CL_SoundOutput_alsa : public CL_SoundOutput_Generic
{
//! Construction:
public:
CL_SoundOutput_alsa(int mixing_frequency);
~CL_SoundOutput_alsa();
//! Attributes:
public:
snd_pcm_t *handle;
snd_pcm_uframes_t frames_in_period;
snd_pcm_uframes_t frames_in_buffer;
//! Operations:
public:
//: Called when we have no samples to play - and wants to tell the soundcard
//: about this possible event.
virtual void silence();
//: Returns true if all fragments are filled with data.
virtual bool is_full();
//: Returns the buffer size used by device (returned as num [stereo] samples).
virtual int get_fragment_size();
//: Writes a fragment to the soundcard.
virtual void write_fragment(short *data);
//: Waits until output source isn't full anymore.
virtual void wait();
//! Implementation:
private:
};
#endif
#endif
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